| Piqua to Rothenbach an der Pegnitz | 4,402.99 mi (7,085.92 km) |
| Piqua to Rothenburg ob der Tauber | 4,365.96 mi (7,026.34 km) |
| Piqua to Rottweil | 4,348.71 mi (6,998.57 km) |
| Piqua to Rudersberg | 4,358.50 mi (7,014.34 km) |
| Piqua to Rudesheim am Rhein | 4,258.18 mi (6,852.87 km) |
| Piqua to Rudolstadt | 4,361.25 mi (7,018.75 km) |
| Piqua to Runkel | 4,252.33 mi (6,843.47 km) |
| Piqua to Ruppichteroth | 4,211.93 mi (6,778.45 km) |
| Piqua to Russelsheim | 4,276.31 mi (6,882.05 km) |
| Piqua to Rutesheim | 4,338.49 mi (6,982.13 km) |
| Piqua to Ruthen | 4,227.70 mi (6,803.82 km) |
| Piqua to Saalfeld | 4,365.13 mi (7,025.00 km) |
| Piqua to Saarbrucken | 4,247.62 mi (6,835.88 km) |
| Piqua to Saarlouis | 4,234.97 mi (6,815.53 km) |
| Piqua to Saarwellingen | 4,235.86 mi (6,816.96 km) |
